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E30 (1982 - 1993)
God's Chariot. The E30 was produced primarily from 1982 through 1991. The cabriolet was the one exception which was produced through 1993.

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  #1  
Old 04-27-2013, 04:42 PM
Chaunceton Chaunceton is offline
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AC Recharge Question

The AC system in my 89 325i was converted to a freeze 12 system at some point before I bought it. It now needs to be recharged. I have been reading that some say R-134a is ok to put into a Freeze 12 system. But isn't Freeze 12 a combination of R-134a and some other lubricant? Would it be ok to recharge my AC just using a canister of R-134a? Or is Freeze 12 the only acceptable substance to recharge my AC with?


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  #2  
Old 04-27-2013, 04:47 PM
Vman68 Vman68 is offline
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Re: AC Recharge Question

I work for a manufacturer of AC equipment and will help answer your questions if you send me a PM.

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Old 04-27-2013, 06:09 PM
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hornhospital hornhospital is offline
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Why not answer his question here on the forum? If everyone answered questions by PM it would defeat the purpose of have a forum.
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Old 04-27-2013, 06:14 PM
Vman68 Vman68 is offline
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Re: AC Recharge Question

Its just easier to explain if I talked to the person on the phone. I sent a reply via PM and they are welcome to post what I said on the forum.

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  #5  
Old 04-27-2013, 08:57 PM
Chaunceton Chaunceton is offline
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AC Recharge Question

He was generous enough to offer his number and have me call. However, calling was inconvenient for me and I asked that he just reply via personal message. The answer was more complex than I anticipated. Long story short, if you have a Freeze 12 system, stick to Freeze 12. R-134a system, go ahead with the R-134a. So they are not interchangeable. Is this correct?


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Old 04-27-2013, 09:02 PM
Vman68 Vman68 is offline
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Re: AC Recharge Question

You should never mix refrigerants. Stick with Freeze 12 or retrofit the system to 134a.

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  #7  
Old 04-27-2013, 09:13 PM
Chaunceton Chaunceton is offline
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AC Recharge Question

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Originally Posted by Vman68 View Post
You should never mix refrigerants. Stick with Freeze 12 or retrofit the system to 134a.

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Perfect. Thanks man.


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  #8  
Old 04-29-2013, 03:02 AM
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Nick323 Nick323 is offline
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Normally this would make no difference, but here some Refrigeration guys use Hydrogen of all things, as a refrigerant
Aparently Hydrogen can be used in older systems & if things go wrong, you won't worry too much as you will be meeting your maker
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Old 04-29-2013, 06:21 AM
Chaunceton Chaunceton is offline
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AC Recharge Question

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Originally Posted by Nick323 View Post
I live in Namibia
Normally this would make no difference, but here some Refrigeration guys use Hydrogen of all things, as a refrigerant
Aparently Hydrogen can be used in older systems & if things go wrong, you won't worry too much as you will be meeting your maker
Haha that's pretty sketchy. I heard nitrogen is the wave of the AC future.


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Old 05-03-2013, 12:33 PM
Chaunceton Chaunceton is offline
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AC Recharge Question

So I bought the retro fit kit. Now I'm ready to take my R-12 and turn it into r 134a. In the instructions it tells me to have a professional extract the remaining R-12 with the right equipment before I begin pumping in the new r 134a with oil. Can I do this myself without specialized tools?


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Old 05-03-2013, 05:35 PM
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downhiller downhiller is offline
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legally, no.
illegally, yes.

but it always nice to have a shop go through and vacuum test the system with their equipment to make sure there are no leaks
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Old 05-03-2013, 06:20 PM
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hornhospital hornhospital is offline
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Does your R12 system still cool? If it does, yes, take it to be vacuumed. If not, there's a good chance there's nothing in there to vacuum out. It's already escaped. Which means you need the pros to find and fix the leak anyway.
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1995 318is "Bebe"; 1993 325is "Elvira" 1985 635CSi "Katja" 1984 633CSi "Sylvia"
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  #13  
Old 05-03-2013, 08:03 PM
Chaunceton Chaunceton is offline
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AC Recharge Question

Quote:
Originally Posted by hornhospital View Post
Does your R12 system still cool? If it does, yes, take it to be vacuumed. If not, there's a good chance there's nothing in there to vacuum out. It's already escaped. Which means you need the pros to find and fix the leak anyway.
Certainly doesn't blow cool anymore. So is all this legal business because of the refrigerant? What if I just captured it and took it to a designated disposal site?


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  #14  
Old 05-04-2013, 08:21 PM
shima14 shima14 is offline
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R12 and r134 use different types of oil although their is one that's universal which I believe is ester oil I think.. Pag oil is used for r134 so make sure u got the right kind... And as for your car not cooling anymore is your ac compressor kicking on?... Or do you know for sure it's just low on freont?
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Old 05-05-2013, 08:43 AM
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downhiller downhiller is offline
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Quote:
Originally Posted by Chaunceton View Post
Certainly doesn't blow cool anymore. So is all this legal business because of the refrigerant? What if I just captured it and took it to a designated disposal site?


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yea, the EPA doesnt want anyone who doesnt have a license to mess with r12 due to the nasty ingredients. if you have the license (sometimes disposal places verify if your not with a company) and you have the proper tank then yes you can

but if you depress one of the valves youll know if there r12 in there. if you have it blow out with some force, then most likely you compressor is shot. if nothing comes out, then you got more problems and the easiest why do search is add a dye to nitrogen and fill the system to say 100psig. then wait a week and search system with a blacklight. then replace whatevers leaking.
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